Fixes and reenables RendererAccessibilityBrowserTest.*

content/browser/accessibility/renderer_accessibility_browsertest.cc

Index: content/browser/accessibility/renderer_accessibility_browsertest.cc
diff --git a/content/browser/accessibility/renderer_accessibility_browsertest.cc b/content/browser/accessibility/renderer_accessibility_browsertest.cc
index 93676087b0016cdc3c93ad546461a92af1d0cb72..f74b01730ccb0b33fcd7d9d3366b3f385c2d9004 100644
--- a/content/browser/accessibility/renderer_accessibility_browsertest.cc
+++ b/content/browser/accessibility/renderer_accessibility_browsertest.cc
@@ -42,10 +42,7 @@ class RendererAccessibilityBrowserTest : public InProcessBrowserTest {
     RenderViewHost* view_host = static_cast<RenderViewHost*>(host);
     view_host->set_save_accessibility_tree_for_testing(true);
     view_host->EnableRendererAccessibility();
-    while (view_host->accessibility_tree_for_testing().state &
-        (1 << WebAccessibility::STATE_BUSY)) {
-      tree_updated_observer.Wait();
-    }
+    tree_updated_observer.Wait();
     return view_host->accessibility_tree_for_testing();
   }